Method ReadPiece

IO/XML/vtkXMLUnstructuredDataReader.cxx:412–452

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//------------------------------------------------------------------------------
int vtkXMLUnstructuredDataReader::ReadPiece(vtkXMLDataElement* ePiece)
{
  if (!this->Superclass::ReadPiece(ePiece))
  {
    return 0;
  }

  if (!ePiece->GetScalarAttribute("NumberOfPoints", this->NumberOfPoints[this->Piece]))
  {
    vtkErrorMacro("Piece " << this->Piece << " is missing its NumberOfPoints attribute.");
    this->NumberOfPoints[this->Piece] = 0;
    return 0;
  }

  // Find the Points element in the piece.
  int i;
  this->PointElements[this->Piece] = nullptr;
  for (i = 0; i < ePiece->GetNumberOfNestedElements(); ++i)
  {
    vtkXMLDataElement* eNested = ePiece->GetNestedElement(i);
    if (strcmp(eNested->GetName(), "Points") == 0)
    {
      // make sure the XML file is somehow valid:
      if ((this->NumberOfTimeSteps > 0 && eNested->GetNumberOfNestedElements() >= 1) ||
        (this->NumberOfTimeSteps == 0 && eNested->GetNumberOfNestedElements() == 1))
      {
        this->PointElements[this->Piece] = eNested;
      }
    }
  }

  // If there are some points, we require a Points element.
  if (!this->PointElements[this->Piece] && (this->NumberOfPoints[this->Piece] > 0))
  {
    vtkErrorMacro("A piece is missing its Points element "
                  "or element does not have exactly 1 array.");
    return 0;
  }

  return 1;
}

//------------------------------------------------------------------------------
int vtkXMLUnstructuredDataReader::ReadPieceData()